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AMD Radeon Discussion and Support General discussion, tweaking, overclocking and technical support questions about discrete Radeon graphics products.

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Old Sep 26, 2012, 10:22 PM   #1
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Ford Freak
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Default Looking for a 7970 with 2 DVI connections - which one should I get?

I've decided to go with a 7970 for my next upgrade. My 4870 has been with me for over 4 years now. It just doesn't cut it for some of the newer games. I know I'll need something to run Crysis 3 at decent settings. The only thing I'm looking for in a 7970 is 2 DVI connections. There's a few I found on Newegg but I'm not sure if there are any others out there. I don't care about the OEM cooling since I'll be water cooling it anyway. Are the non-GHz editions easily overclockable to GHz edition speeds? If yes, I'll be happy to go with one of those to save money.

Here's what I found on Newegg.

PowerColor AX7970 3GBD5-2DHV3 Radeon HD 7970 3GB
SAPPHIRE 100351SR Radeon HD 7970 3GB
MSI R7970 Lightning Radeon HD 7970 3GB
ASUS HD7970-DC2-3GD5 Radeon HD 7970 3GB
PowerColor PCS+ AX7970 3GBD5-2DHPPV Radeon HD 7970 VORTEXII 3GB

GHz versions -

SAPPHIRE Vapor-X 100351VXSR Radeon HD 7970 GHz Edition 3GB
SAPPHIRE Vapor-X 100351-6GVXSR Radeon HD 7970 GHz Edition 6GB

Unless the extra 3GB provides a noticable difference, the higher price isn't worth it to me.
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Old Sep 26, 2012, 11:24 PM   #2
Mystik
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Default

i have the asus dc2 version
overclocking to 1100/1575 without touching voltages.
any higher on core and i get artifacts in games.

2 dvi ports.
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Old Sep 27, 2012, 09:53 AM   #3
colson79
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Pretty much all the 7970 cards will do 1 Ghz without any problems. Most will do 1.1 GHz pretty easy as well so I wouldn't spend the extra money on the 1 GHz edition. And base on the benchmarks I have read the card with 6 GB of vram wont give you any more performance.
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Old Sep 27, 2012, 10:11 AM   #4
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Default

Quote:
Originally Posted by colson79 View Post
Pretty much all the 7970 cards will do 1 Ghz without any problems. Most will do 1.1 GHz pretty easy as well so I wouldn't spend the extra money on the 1 GHz edition. And base on the benchmarks I have read the card with 6 GB of vram wont give you any more performance.
As an owner of an 6GB version, there is no appreciable difference between the two (3GB and 6GB) clock for clock. The only real difference is that the 6GB version comes clocked at 1100 (vs 1050) at stock clock and jumps to 1200mhz when using the bios "button". This also bumps the voltage and allows Power tune to go to +/- 50 instead of the normal +/- 20. If you have money to blow and an extra 150-250 Mhz is worth it then go for it, otherwise not really worth an extra $200ish (nearly $1 per Mhz). I play most games at 5760x1080 (1920x1080 x3) and even with 4x AA, according to MSI Afterburner I hardly ever go over 2.5GB.
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